US7594587B2 - Removable locking container cover - Google Patents
Removable locking container cover Download PDFInfo
- Publication number
- US7594587B2 US7594587B2 US11/542,547 US54254706A US7594587B2 US 7594587 B2 US7594587 B2 US 7594587B2 US 54254706 A US54254706 A US 54254706A US 7594587 B2 US7594587 B2 US 7594587B2
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- US
- United States
- Prior art keywords
- container
- lock
- lid
- cover
- flexing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
- 239000011324 bead Substances 0.000 claims abstract description 41
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 claims 2
- 239000002991 molded plastic Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000035622 drinking Effects 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G19/00—Table service
- A47G19/22—Drinking vessels or saucers used for table service
- A47G19/2205—Drinking glasses or vessels
- A47G19/2266—Means for facilitating drinking, e.g. for infants or invalids
- A47G19/2272—Means for facilitating drinking, e.g. for infants or invalids from drinking glasses or cups comprising lids or covers
Definitions
- the present invention relates generally to removable covers for containers, and more particularly, to removable and reusable covers with a pour spout for use with microwavable containers.
- a removable cover for a container such as a container of food or drink.
- Many such containers can be placed in a microwave oven to heat its contents.
- the cover or closure functions to prevent the contents of the container from spilling when the container is moved, or splattering when being heated in the microwave.
- many prior art container covers have suffered from deficiencies. Depending on their construction, they may be difficult to put on or to remove, or may be too easily removed, thereby resulting in inadvertent removal of the cover.
- the invention is directed to a container cover for use with a container having a neck with an outer bead ring or lip.
- the container cover comprises a lid with a spout hole (or pour spout), a skirt extending downward from the circumference of the lid, a concentric plug seal extending downward from the bottom of the lid disposed inside the skirt, a spout door hingeably connected to the top of the lid, and a plurality of locks each having an inwardly projecting wedge, which hold the cover in place on the container by engaging the container neck bead ring.
- the lid is circular and fits on a container neck with a circular cross section.
- the cover has a flexing lock disposed at the rear of the lid, and two non-flexing locks disposed on the opposite side of the cover from the flexing lock.
- a spout plug seal is located on the bottom of the spout door and is designed to snap into place in the spout hole, thereby sealing the spout hole.
- a lifting tab on the front edge of the spout door is used to unsnap or release the door and open the spout hole. When open, the lifting tab on the spout door preferably snaps into place under a nub projecting from the inside of the flexing lock, thereby holding the door in an open position and also preventing the flexing lock from being inadvertently unlatched.
- FIG. 1 is a partial cutaway perspective view of a container cover according to a preferred embodiment of the present invention, shown with the spout door closed, installed on a container.
- FIGS. 2A and 2B are top and bottom perspective views, respectively, of the cover of FIG. 1 , shown with the spout door open, without the container.
- FIGS. 3A , 3 B and 3 C are a top view of the cover of FIG. 1 , an enlarged view showing the flexing lock, and an enlarged view showing a non-flexing lock, respectively.
- FIGS. 4A , 4 B and 4 C are a side cross-sectional view of the cover of FIG. 1 , an enlarged view of the front of the spout door showing the lifting tab and the spout door plug seal snap, and an enlarged view showing the flexing lock, respectively.
- FIG. 5 is a bottom view of the cover of FIG. 1 .
- FIGS. 6A and 6B are a rear view of the cover of FIG. 1 , and an enlarged view showing the flexing lock, respectively.
- FIG. 7 is a cross-sectional view of the cover.
- FIGS. 8A and 8B illustrate the top and cross-sectional view of an alternate embodiment of the present invention.
- FIGS. 9A and 9B illustrate the top and bottom view of an alternate embodiment of the present invention.
- FIG. 9 c is an enlarged section from FIG. 9B
- FIG. 1 shows a container 100 in combination with a removable locking container cover 110 according to the present invention.
- the container 100 has an upper end 120 having an open mouth.
- a removable top or shipping seal 122 such as a peel-off top with a ring-like opening tab, may be sealed to a rim or outer edge of the container 100 to prevent the contents of the container from spilling.
- the user removes the top prior to use to expose the contents (not shown) of the container 100 .
- the container cover 110 may be attached or reattached to the container upper end 120 before moving or heating the container to reduce the risk of the contents spilling while the container is carried or splattering when the container is heated.
- the container 100 may be of any size or shape and may be fabricated from any of a variety of materials.
- the container 100 contains food products which are heated in a microwave oven prior to consumption. Therefore, container 110 is preferably fabricated from a material suitable for use with food products and for heating in a microwave, for example a thermoplastic material such as polypropylene formed by injection molding.
- the container 100 preferably includes a neck or rim with a protruding lip having an outer bead ring 130 , or similar structure proximate to its upper end 120 .
- the outer bead ring 130 may be disposed directly adjacent to the upper end 120 of the container 100 or in close proximity thereto.
- container 100 and cover 110 are illustrated as each having a substantially circular shape, it will be appreciated that the teachings of the invention are applicable to a variety of other shapes.
- the following description and embodiments of the invention are not intended to describe all cover/container combinations, but are merely illustrative of how the teachings of the present invention may be employed in the context of a preferred container configuration.
- the container cover 110 includes a lid 140 , having a top, a bottom, a circumferential edge 145 , and a spout hole.
- the cover also includes a skirt 150 extending downward from or near the circumferential edge of the lid 140 .
- the skirt 150 has an inner surface (or wall) and an outer surface (or wall).
- the outer wall faces away from the container, and the inner wall faces toward the container, and is preferably shaped to fit snugly around the outside of the container neck and/or outer bead ring.
- Container cover 110 also includes a spout door 160 .
- the spout door is attached to the top of the lid preferably via at least one hinge 165 .
- the spout door has an edge 170 , and a point on the edge furthest from the hinge defines a front edge of the door.
- the door is shown in FIG. 1 in its closed position. When the door is in its closed position, the top of the door faces the same direction as the top of the lid, and the bottom of the door faces the same direction as the bottom of the lid.
- the hinge is disposed on the lid so that the spout hole is completely covered by the door when the door is in its closed position.
- a point on the circumference of the lid nearest the front edge of the door when the door is in its closed position defines the front of the lid, and a point on the circumference of the lid opposite the front of the lid defines the rear of the lid.
- FIG. 2A is a top perspective view of the cover of FIG. 1 , shown with the door in its open position, uncovering spout hole 200 with edge 205 , and showing the bottom of the spout door.
- the bottom of the spout door comprises a spout plug seal 210 shaped to fit snugly and sealingly in the spout hole when the door is in its closed position.
- the hinge 165 is preferably a split level living hinge (e.g., molded integrally to the lid.)
- Recessed area 225 in the top of the lid is shaped so that when the door is in a closed position, the bottom surface of the door 220 fits into a homologously shaped recess on the lid 225 .
- the portion of the top of the lid adjacent to the spout hole preferably has a concave or sloped surface 230 to help control any spillage of the contents of the container.
- the container cover has a lip 240 extending upward from the circumferential edge of the lid, which also helps control any spillage of the contents of the container.
- the lip 240 has a reduced height or notch 245 at the part of the circumference closest to the spout hole, to help control the flow of the contents when being poured out through the spout hole 200 or when the user drinks directly from the spout hole.
- the container cover is held onto the container by a plurality of locks, one of which is a flexing lock 250 at the rear of the lid.
- the locks engage the outer bead ring on the neck of the container, as will be described hereinafter.
- FIG. 2B is a bottom perspective view of the cover of FIG. 1 .
- the bottom of the lid 140 has a protruding area 260 with a profile similar to the profile of the spout door in its closed position.
- Plug seal 270 is preferably formed concentrically to the skirt 150 and has a smaller diameter than the skirt.
- the plug seal 270 extends from the bottom of the lid and preferably connects along its entire length to the bottom of the lid.
- the plug seal has an outer wall shaped to preferably fit snugly and sealingly against the inside of the neck or rim of the container.
- a plurality of stop ribs 280 preferably extend from the inside of the skirt and/or the bottom of the lid. The stop ribs are located so that, when the cover is installed on a container, the stop ribs touch the top of the container neck limiting the downward movement of the cover onto the container.
- FIG. 3A is a top view of the cover 110 of FIG. 1 with the door 160 in a mostly open position.
- a lifting tab 300 is located on the front edge 305 of the door. When the door is in its fully open position, the end of the lifting tab 300 engages a nub 310 that protrudes from the inside of a flex lock panel 315 , so that the door 160 is held in its open position by the nub 310 and the lifting tab 300 prevents the flex lock panel 315 from moving into an unlatched position.
- each wedge is preferably located at an angle ⁇ from a longitudinal axis 325 , which is preferably in a range of approximately 135 degrees to approximately 155 degrees, and is most preferably 144 degrees.
- the wedges 320 are preferably equally spaced from and on opposite sides of the longitudinal axis 325 .
- the flexing lock also includes a wedge 350 .
- the wedge 350 preferably is located on the longitudinal axis 325 .
- FIG. 4A is a side cross-sectional view of the cover of FIG. 1 taken along lines 4 A- 4 A in FIG. 3A .
- This figure more clearly illustrates the door in a mostly open position.
- the lifting tab 300 will engage the nub 310 on the inside of the flex lock panel 315 , holding the door in its open position, and preventing the flexing lock from inadvertently being unlatched.
- Spout plug seal 210 is shown on the bottom of the door (facing upward in FIG. 4A ).
- the spout plug seal 210 will snugly and sealingly fit against the edge 205 of the spout hole 200 , and spout plug seal snap 325 will engage the edge 205 of the spout hole.
- the level of the top of the wedges of the flexing and non-flexing locks (i.e., the vertical location of the tops of the wedges on the skirt) is indicated by dashed line 330 .
- the bottom of a stop rib 280 is also visible.
- the distance d between the bottom of the stop ribs 280 and the top of the lock wedges 330 is sized so that when the cover is installed on a container having a bead ring 130 on its neck, the bottom of the stop ribs 280 touches the top of the neck or the bead ring 130 , and the lock wedge engages the bottom of the container bead ring 130 , thereby locking the container cover in place.
- FIG. 5 is a bottom view of the cover of FIG. 1 .
- the truncated tear drop-shaped wedges 340 of the two non-flexing locks 320 are visible from the bottom in the figure, with the feathered part of the wedges pointing toward the flexing lock.
- the wedge 350 of the flexing lock is also visible, as are the stop ribs 280 extending from the inside of the skirt.
- FIG. 6A is a rear view of the cover according to one embodiment of the invention
- FIG. 6B is an enlarged rear view of the cover, showing the flexing lock 250 .
- the flexing lock comprises a flex lock panel 315 preferably of substantially the same thickness as the skirt 150 , disposed so that it does not interfere with the plug seal when the cover is installed.
- the lock panel has an inside, an outside, a top edge, a left edge and a right edge.
- an elastically deformable hinge attaches the flex lock panel to the skirt.
- a deformable pivot bar 400 is formed on each of the left and right sides of the flex lock panel 315 at an intermediate point along the height of the panel.
- the pivot bars are connected to the skirt. Forming the pivot bars as part of the skirt and not attached directly to the plug seal 270 results in the flex lock remaining comparatively cooler during heating since the flex lock is not in direct contact with the interior of the container.
- the panel, pivot bars and the skirt are all preferably formed as an integral injection molded unit.
- the outside surface of the flex lock panel 315 preferably has a textured area 410 substantially adjacent to the top edge of the panel. The textured area helps keep the fingers of a user from slipping, such as when removing the cover from the container.
- FIG. 3B is an enlarged top view of the cover, showing the flexing lock.
- the locking wedge 350 extends inward from an inside surface of the flex lock panel 315 . In a latched position, the locking wedge engages the lower edge of outer bead ring of the container. In an unlatched position, the wedge 350 is released from the outer bead ring.
- the nub 310 extends from the top of the inside surface of the flex lock panel.
- Pawls 420 may be formed on the back of the pivot bars 400 at a location which allows them to contact the top surface of the container neck when the flexing lock is latched. This provides additional support for the flex lock panel when it is actuated from the latched to the unlatched position since the pawls push on the top surface of the container neck, thereby assisting in the pivoting of the flex lock panel.
- FIG. 4B is an enlarged cross-sectional view of the tip end portion of the spout door 160 .
- the lifting tab 300 extends from the front edge of the door, and is designed to engage with the nub 310 ( FIG. 4C ) on the inside of the flex lock panel when the door is in its open position, thereby holding the door open, as hereinbefore described.
- the spout plug seal snap 325 protrudes from the spout plug seal 210 , and engages an edge of the spout when the door is in its closed position, thereby holding the door closed and sealing the spout hole shut, as hereinbefore described.
- FIG. 4C is an enlarged cross-sectional view of the flexing lock 250 .
- the nub 310 is shown extending inward from the top of the inside surface of the flex lock panel 315 .
- the textured area 410 is shown on the top of the outside surface of the flex lock panel 315 .
- the locking wedge 350 extends inward from the bottom of the inside surface of the flex lock panel 315 .
- FIG. 3C is an enlarged partial top view of the cover, showing a non-flexing lock 320 .
- the non-flexing lock 320 includes the locking wedge 340 which extends from the inner wall of the skirt 150 .
- the wedge 340 can more clearly be seen in this figure in the shape of a truncated tear drop, with the feathered edge 700 extending circumferentially away from the bulbous end (and from the spout.)
- An open slot 710 is preferably formed between the circumference of the lid and the top circumference of the skirt, substantially adjacent to the non-flexing lock wedge 340 .
- FIG. 7 is a cross-sectional front view of cover 110 .
- the open slots 710 are substantially adjacent to the non-flexing lock wedges 340 .
- the plug seal 270 extends from the bottom of the lid 140 , concentric with the skirt 150 which extends downward from the circumference of the lid.
- the stop ribs 280 extend from the skirt and the lid, and do not interfere with the plug seal 270 when the cover is installed on a container.
- Distance d between the bottom of the stop ribs 280 and the top of wedges 340 is sized so that when the cover is installed on a container having a bead ring 130 on its neck, the bottom of the stop ribs 280 touches the top of the neck or bead ring 130 , and the wedges engage the bottom of the bead ring 130 , thereby locking the container cover 110 in place on the container 100 .
- the illustrated embodiment includes open slops 710 , it should be readily apparent that the slots are not necessary in the cover.
- the container cover of the present invention is preferably formed from thermoplastic material such as polypropylene in a one piece construction using an injection molding process.
- the container cover preferably has a hinged drink door and three integral locks.
- the cover is preferably microwavable and easily removed and reapplied to the container by the user. It is contemplated that the cover can be locked onto the top lip of the container during an assembly process at the factory, keeping the top surface of the container completely sealed, clean and dry during shipping and storage. To remove the cover cap, the user presses inward on the textured portion of the flex lock panel of the flexing lock.
- the user After the user has removed the cover, the user opens the container, such as by pulling upward on the now exposed metal ring tab of a sealed container top, completely separating the top from the container and discarding it.
- the user replaces the cover cap with the door in the open position and places the container with cover into a microwave.
- the user places the door into its open position it makes a distinctive snapping sound as the lifting tab engages the nub on the flex lock panel, securing the door in its open position.
- the door is left open during the microwaving process to vent steam generated in the container by the heating process.
- the container has a circular neck
- the cover has one flexible lock located at the rear of the cover and two non flexing locks, one on each side of the spout.
- the two non-flexing locks are formed as part of the inner wall of the skirt, and the flexing lock is part of the inner wall of the flex lock panel.
- This lock approach leaves the plug seal completely free from all connecting obstructions that create unwanted shrinkage and lead to leakage problems.
- the stop ribs preferably do not touch the plug seal or cause seal distortions. Because of the uninterrupted plug seal, it is completely round and seals 360 degrees against the inside of the neck of the container. Locating the flexible lock on the skirt allows for simple assembly by simply placing the cover over the container and pressing the cover directly down onto the container. When the flexible lock is engaged it makes a distinct snap sound as it slides over the container bead. The locking action can also be felt by the user through the finger tips as it locks over the container bead.
- the two non-flexing front locks are shaped as truncated teardrops so that they will slip over the container bead as the cover is removed.
- the two actions of unlatching the flexing lock and lifting the cover need to be done simultaneously to remove the cover.
- the feathered end of the teardrop points toward the flexing lock, so that the cover can be peeled off of the container bead. Directing the feathered end of the truncated teardrop toward the flexing lock also creates a smooth entry for the container bead to start and slide over the lock as the cover cap is taken off.
- a safety feature of the preferred embodiment is that when the door is placed in its open position, it prevents the flexible lock from being inadvertently unlocked.
- the lifting tab engages a nub on the inner top surface of the flexing lock. This prevents a user from inadvertently depressing the flexing lock and accidentally removing the cover. This reduces the risk of the contents of the container spilling onto the user.
- the cover can only be unlocked and removed from the container when the door is not in its open position.
- FIGS. 8A and 8B an alternate embodiment of the invention 500 is shown that includes the flexible lock 502 and non-flexible locks 504 , but does not include a spout.
- the cover 500 is simply removed in order to gain access to the contents.
- one or more vents 506 are formed in the cover.
- the vents 506 are formed on the sloping transition section 508 between the lower annular surface 510 and the upper surface 512 .
- This configuration is designed to create a chimney effect whereupon the heat generated during cooking is channeled toward the center of the cover escapes through the vents. This keeps the locks and plug seal cooler. Thus, it results in less harm to the user and maintains a better seal.
- FIGS. 9A-9C illustrate an alternate embodiment of the invention with the drinking spout.
- the door plug seal 554 is modified to permit additional flexure.
- the door plug seal wall 554 is formed with a different wall thickness in the front 558 and back 556 .
- the wall in the back 556 is thicker than the wall in the front 558 .
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Abstract
Description
Claims (22)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/542,547 US7594587B2 (en) | 2005-11-02 | 2006-10-03 | Removable locking container cover |
US11/654,322 US7594588B2 (en) | 2006-10-03 | 2007-01-17 | Removable locking container cover with slotted outer skirt |
US11/824,791 US8038026B2 (en) | 2006-10-03 | 2007-07-02 | Removable locking container cover with slotted outer skirt |
US11/890,915 US8087539B2 (en) | 2006-10-03 | 2007-08-07 | Easily removable multi-paneled locking cover |
PCT/US2007/019866 WO2008042087A2 (en) | 2006-10-03 | 2007-09-13 | Removable locking container cover |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73281105P | 2005-11-02 | 2005-11-02 | |
US11/542,547 US7594587B2 (en) | 2005-11-02 | 2006-10-03 | Removable locking container cover |
Related Child Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/654,322 Continuation-In-Part US7594588B2 (en) | 2006-10-03 | 2007-01-17 | Removable locking container cover with slotted outer skirt |
US12/027,768 Division US20080136884A1 (en) | 2003-01-24 | 2008-02-07 | Liquid composition, recording liquid, liquid cartridge, liquid spraying cartridge, and liquid spraying apparatus and method |
US12/027,793 Division US20080129786A1 (en) | 2003-01-24 | 2008-02-07 | Liquid composition, recording liquid, liquid cartridge, liquid spraying cartridge, and liquid spraying apparatus and method |
US12/027,840 Division US8075125B2 (en) | 2003-01-24 | 2008-02-07 | Liquid spraying cartridge containing a recording liquid having a pH of over 4 and under 6 |
US12/027,821 Division US7771037B2 (en) | 2003-01-24 | 2008-02-07 | Liquid spraying method using a recording liquid having a pH of 4-6 |
US12/027,808 Division US8075124B2 (en) | 2003-01-24 | 2008-02-07 | Liquid cartridge containing a recording liquid having a pH of over 4 and under 6 |
Publications (2)
Publication Number | Publication Date |
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US20070095845A1 US20070095845A1 (en) | 2007-05-03 |
US7594587B2 true US7594587B2 (en) | 2009-09-29 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/542,547 Expired - Fee Related US7594587B2 (en) | 2005-11-02 | 2006-10-03 | Removable locking container cover |
Country Status (1)
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US (1) | US7594587B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US8672174B1 (en) * | 2013-01-11 | 2014-03-18 | Leedsworld, Inc. | Multi-function lid for beverage containers |
USD841392S1 (en) * | 2016-10-24 | 2019-02-26 | Heatgenie, Inc. | Lid for drinking container |
US11518583B2 (en) | 2019-12-04 | 2022-12-06 | California Innovations Inc. | Container assembly |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2892097B1 (en) * | 2005-10-14 | 2008-01-04 | Thierry Claude Leon Garcia | MULTI-PURPOSE COVER, IN PARTICULAR FOR LIQUIDS, IN PARTICULAR FOR PAINT POT. |
US8181810B2 (en) * | 2009-03-31 | 2012-05-22 | J.L. Clark, Inc. | Drinking cup having storage compartment and lever actuated seal for drinking area |
CA2762541C (en) | 2010-12-22 | 2018-10-09 | Kraft Foods Global Brands Llc | Container lid having selectively coverable access opening |
CN102687972A (en) * | 2012-06-12 | 2012-09-26 | 揭阳市兴财金属制品有限公司 | Water cup and double-hinge turning type cup cover of water cup |
US8733567B1 (en) * | 2012-11-17 | 2014-05-27 | Daniel A. Dopps | Bottle capping assembly |
PL2958818T3 (en) * | 2013-02-19 | 2018-03-30 | Cool Gear International, Llc | Caps and containers containing the same |
CN104545277A (en) * | 2015-01-26 | 2015-04-29 | 邹中宝 | Insulation cup free of cover opening |
WO2019241553A1 (en) | 2018-06-13 | 2019-12-19 | Camcal Enterprises, Llc D/B/A Bottlekeeper | Beverage container enclosure |
USD862178S1 (en) | 2019-06-13 | 2019-10-08 | CamCal Enterprises, LLC | Container enclosure |
USD864672S1 (en) | 2019-06-13 | 2019-10-29 | CamCal Enterprises, LLC | Container enclosure |
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Cited By (3)
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US8672174B1 (en) * | 2013-01-11 | 2014-03-18 | Leedsworld, Inc. | Multi-function lid for beverage containers |
USD841392S1 (en) * | 2016-10-24 | 2019-02-26 | Heatgenie, Inc. | Lid for drinking container |
US11518583B2 (en) | 2019-12-04 | 2022-12-06 | California Innovations Inc. | Container assembly |
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US20070095845A1 (en) | 2007-05-03 |
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